Library Catalogue

Library Catalogue

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    Union Catalogue of Agricultural Libraries in the Netherlands

    The WUR Library Catalogue contains bibliographic data on books and periodicals held by the libraries of Wageningen University and Research Centre and some 15 associated libraries. Holding data are added to each record.

    Subjects covered include Agrotechnology, Food and Food Production, Plant and Animal Sciences, Soil Science, Geo-information, Landscape and Spatial Planning, Water and Climate, Ecosystem Studies, Economics and Society.

    The joint collections of the participating libraries cover a substantial part of the internationally available scientific literature in these disciplines.

    As far as Dutch scientific literature in these fields is concerned, coverage can be considered near 100%, including much of the so-called "grey literature".

    All titles are entered in their original language. Keywords are added to facilitate subject searching.

    The database is updated every day and now contains over 830.000 records.

Record number 104219
Title Verbetering der cassave-cultuur door middel van proefvelden
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door Carel Ernest van der Zijl
Author(s) Zijl, C.E. van der
Publisher Wageningen : Veenman
Publication year 1930
Description 127 p
Notes Proefschrift Wageningen
Tutors Stok, Prof. J.E. van der
Graduation date 1930-10-23
Dissertation no. 54
Author abstract show abstract
Cassava was shown not to require deep tillage. The influence of planting time was very great. The optimum time could be easily established by experiments. Closer spacing diminished root production per plant but this loss was compensated by the larger number of plants. Only very wide spacing notably diminished yield. Planting deeper than 2 in. diminished meal yields. Cuttings from gardens 17.5 months old proved better than from gardens 19.5 and 24.5 months old. The removal of stems from the plantations for the making of cuttings gave a meal loss of 8 to 9 % if one stem was left on each plant and one of 10 to 16 Y. if all stems were cut. Cutting 5 months before harvesting caused slightly less setback than 9 months before it. The influence of fertilization was rarely marked (K, P) or almost negligible (N, Ca). Green manuring had no influence. An optimum age period for ripeness could be established. Seven varieties could be ranged according to their productivity, as also 7 seedlings selected by Koch.
Online full textINTERNET
On paper FORUM ; SPEC.COLL. ; C1972
FORUM ; SPEC.COLL. ; A2096,1930,5
FORUM ; STACKS ; NN08202,54 ; Not for loan
FORUM ; STACKS ; 1072D01
Keyword(s) (cab) manihot esculenta / cassava / planting / sowing / transplanting / soilless culture / java / netherlands east indies
Categories Cassave
Publication type PhD thesis
Language Dutch; Flemish
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